/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.engine.impl.variable;


/**
 * Subclass of {@link JPAEntityVariableType} which is cacheable, unlike the super-class. This is used
 * when fetching historic variables
 * 
 * @author Frederik Heremans
 */
public class HistoricJPAEntityVariableType extends JPAEntityVariableType {

  private static final HistoricJPAEntityVariableType INSTANCE = new HistoricJPAEntityVariableType();
  
  @Override
  public boolean isCachable() {
    return true;
  }
  
  public static HistoricJPAEntityVariableType getSharedInstance() {
    return INSTANCE;
  }
  
}
